TECHNICAL MANUAL
TRANSLATION OF THE ORIGINAL TECHNICAL MANUAL EN
CVD DOSING SYSTEM
INTRODUCTION
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TYPE
CVD1s - 60.1 CVD1 - 60.1 CVD2 - 60.1
CVD1s - 550.1 CVD1 - 550.1 CVD2 - 550.1
CVD1s - 1500.1 CVD1 - 1500.1 CVD2 - 1500.1
NOTE
Keep the operating manual for future use!
ATTENTION
Subject to technical modifications!
Technical manuals of the system subassemblies
WARNUNG
The operating instructions of the system components in the overall documentation
must be observed!
The revision of the overall documentation given in these instructions must be obser-
ved!
DOWNLOAD
Download the technical manuals of the system subassemblies.
Or directly scan the QR code opposite: REVISION 00
INTRODUCTION
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Quality notes
The sera quality management and quality assurance system is certified in accordance with DIN EN ISO 9001:2015.
The sera product complies with the applicable safety requirements and accident prevention regulations.
These technical manual is divided into the following main parts:
TRANSPORT & STORAGE page 6
PRODUCT DESCRIPTION page 7
TECHNICAL DATA page 20
ASSEMBLY / INSTALLATION page 25
COMMISSIONING page 27
MAINTENANCE page 28
SHUT-DOWN / DISPOSAL page 29
CLEARANCE CERTIFICATE page 30
About this instructions
Special notes in these instructions are marked with text and danger symbols.
NOTE
Notes or instructions that faciliate work and ensure a safe operation.
ATTENTION
The non-observance of these safety instructions can result in malfunctions or material damages.
WARNING
The non-observance of these safety instructions can lead to material damages and personal injuries.
SI02 Note on the additional instructions „SAFETY INSTRUCTIONS SI02.
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CONTENT
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TRANSPORT & STORAGE ...........................................................................................................6
General ................................................................................................................................................................... 6
Storage ..................................................................................................................................................................... 6
Transport .................................................................................................................................................................. 6
PRODUCT DESCRIPTION ............................................................................................................ 7
Type key ................................................................................................................................................................... 7
Type plate ................................................................................................................................................................. 7
Notes attached to the product ...................................................................................................................................... 7
Materials .................................................................................................................................................................. 7
Water quality ............................................................................................................................................................ 7
CVD1s ...................................................................................................................................................................... 8
CVD 1 .................................................................................................................................................................... 10
CVD2 „Standby-Installation“ ...................................................................................................................................... 12
CVD2 „2x100%-Installation“ ..................................................................................................................................... 14
TECHNICAL DATA ....................................................................................................................20
UNIT DATA .............................................................................................................................................................. 20
PUMP ASSIGNMENT ............................................................................................................................................... 20
NOISE MEASUREMENT ........................................................................................................................................... 21
TEMPERATURE DATA ................................................................................................................................................ 21
AMBIENT CONDITIONS .......................................................................................................................................... 21
Dimensions CVD1s ................................................................................................................................................... 22
Dimensions CVD1 .................................................................................................................................................... 23
Dimensions CVD2 .................................................................................................................................................... 24
ASSEMBLY / INSTALLATION .....................................................................................................25
Place of installation .................................................................................................................................................. 25
Wall mounting ......................................................................................................................................................... 26
Floor mounting ......................................................................................................................................................... 26
Electrical connection ................................................................................................................................................. 26
COMMISSIONING ..................................................................................................................27
MAINTENANCE ......................................................................................................................28
Wearing parts ......................................................................................................................................................... 28
SHUT-DOWN / DISPOSAL ........................................................................................................29
Decommissioning ..................................................................................................................................................... 29
Disposal .................................................................................................................................................................. 29
CLEARANCE CERTIFICATE ........................................................................................................30
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TRANSPORT & STORAGE
General
sera products are checked for perfect condition and function previous to shipment.
Check for transport damage immediately after arrival of goods. If damage is found, this is to be reported immediately to the
responsible carrier and the manufacturer.
Storage
An undamaged packaging protects the unit during storage and should only be opened when the product is installed.
Proper storage increases the service life of the product and includes prevention of negative influences such as heat, moisture,
dust, chemicals etc.
The following storage specifications are to be obsered:
• Storage place: cool, dry, dustfree and slightly ventilated
• Storage temperature and relative air humidity see Chapter „TECHNICAL DATA“.
• The maximum storage time for the standard packaging is 12 months.
If these values are exceeded, metal products should be sealed in foil and protected from condensation water with a suitable
desiccant.
Do not store solvents, fuels, lubricants, chemicals, acids, disinfectants and similar in the storage room.
WARNING
Observe and follow the safety instructions by all means.
See the additional instructions „SAFETY INSTRUCTIONS“.
Man, machine and environment are endangered if the safety instructions are not observed.
SI02
Transport
The unit should only be transported using suitable lifting gears. Take into account the
weight of the unit and the load-bearing capacity of the means of transport.
The transport is carried out lying down.
Example::
Lift by means of a tie-bar (not included in the scope of supply).
Lead the carrying belts through the transport holes (1) and lift.
ATTENTION
Be careful when lifting the system. Pay attention to the center of gravity! Fasten the
system sufficiently!
ATTENTION
Do not place the system on the collecting basin while working!
If this note is not observed, the drain plug of the collecting basin may break off.
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PRODUCT DESCRIPTION
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PRODUCT DESCRIPTION
Type key
Construction
Number of pumps
Size
123
CVD 1 - 60.1 (Example)
Type plate
Each sera system is factory provided with a type plate. The following information can be found on this type plate.
1
2
3
4
No. Designation
1Type of system
2Serial-no. of system
3Year of construction
4Medium
Notes attached to the product
Symbols which are directly attached to the pump, e.g. arrows for direction of rotation or symbols for fluid connections
are to be observed and kept in legible condition.
Materials
The materials used are stated in the order confirmation and the product description.
Water quality
ATTENTION
Water used for start-up, maintenance and closing down must be similar to drinking water, i.e. chemically neutral, free from
solid and suspended matters and disturbing ion concentrations.
Note the compatibility of the chemical with water and take appropriate measures, if necessary.
Pay attention to the safety data sheet of the medium.
PRODUCT DESCRIPTION
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The chemical is dosed by diaphragm pump(s). The conveying capacity of the pump can be set at the manual stroke length adjust-
ment. Depending on the design of the dosing pump, an additional automatic dosing is possible via pulse or analogue signals.
The piping on the pressure side consists of a taper seat non-return valve and a ball valve as end connection. The pump is pro-
tected against overpressure by an overflow valve. A drain ball valve for evacuation/pressure relief is fitted in the pressure pipe.
The pump and the corresponding fittings are mounted on a wall mounting plate with collecting basin.
CVD1s
10
20
100
110
120
130 140
200
600
610
650
710
700
800
PRODUCT DESCRIPTION
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No. Designation Remark
10 Pump
20 Wall mounting plate of PP (with integrated collecting basin and drain plug)
100 Piping of PVC-U or PP on the pressure side end connection male thread
110 Two-way ball valves (shut-off valve)
120 Check valve
130 Diaphragm relief valve
140 Two-way ball valves (discharge valve)
200 Diaphragm pulsation damper option
500
without pic. Detachable splash guard option
600 Terminal box option
610 Main switch of pump option
650 Socket option
700 Leakage sensor without WHG approval option
710 Leakage sensor with WHG approval option
800 Stand for floor mounting (steel (galvanized) or GFK) option
without pic. Protective cabinet with cabinet heating and/or cabinet lighting option
without pic. Protective roof for drive motor option
PRODUCT DESCRIPTION
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CVD 1
10
20
100
110
120
130 140
200
300
400 450
600
610
650
710
700
800
PRODUCT DESCRIPTION
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No. Designation Remark
10 Pump
20 Wall mounting plate of PP (with integrated collecting basin and drain plug)
100 Piping of PVC-U or PP on the pressure side end connection male thread
110 Two-way ball valves (shut-off valve)
120 Check valve
130 Diaphragm relief valve
140 Two-way ball valves (discharge valve)
200 Diaphragm pulsation damper option
300 Piping on the suction side (with dirt trap and 2/2 way ball cock) option
400 Piping overflow valve back into the suction pipe
(only in connection with piping on the suction si) option
450 Multifunction device option
500
without pic. Detachable splash guard option
600 Terminal box option
610 Main switch of pump option
650 Socket option
700 Leakage sensor without WHG approval option
710 Leakage sensor with WHG approval option
800 Stand for floor mounting (steel (galvanized) or GFK) option
without pic. Protective cabinet with cabinet heating and/or cabinet lighting option
without pic. Protective roof for drive motor option
PRODUCT DESCRIPTION
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CVD2 „Standby-Installation“
10
20
100
110
120
130 140
200
300
400
600
610
650
710 700
600
610
140
400
130
650
10
100
110
120
150
300
350
800
PRODUCT DESCRIPTION
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No. Designation Remark
10 Pump
20 Wall mounting plate of PP (with integrated collecting basin and drain plug)
100 Piping of PVC-U or PP on the pressure side end connection male thread
110 Two-way ball valves (shut-off valve)
120 Check valve
130 Diaphragm relief valve
140 Two-way ball valves (discharge valve)
150 Connecting line pressure-side (between pump 1and pump 2) option
200 Diaphragm pulsation damper option
300 Piping on the suction side (with dirt trap and 2/2 way ball cock) option
350 Connecting conduit on the suction side (between pump 1 and pump 2) option
400 Piping overflow valve back into the suction pipe
(only in connection with piping on the suction si) option
500
without pic. Detachable splash guard option
600 Terminal box option
610 Main switch of pump option
650 Socket option
700 Leakage sensor without WHG approval option
710 Leakage sensor with WHG approval option
800 Stand for floor mounting (steel (galvanized) or GFK) option
without pic. Protective cabinet with cabinet heating and/or cabinet lighting option
without pic. Protective roof for drive motor option
PRODUCT DESCRIPTION
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CVD2 „2x100%-Installation“
10
20
100
110
120
130 140
200
300
400
600
610
650
710
700
600
610
140
400
130
650
10
100
110
120
300
350
800
200
450
PRODUCT DESCRIPTION
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No. Designation Remark
10 Pump
20 Wall mounting plate of PP(with integrated collecting basin and drain plug)
100 Piping of PVC-U or PP on the pressure side end connection male thread
110 Two-way ball valves (shut-off valve)
120 Check valve
130 Diaphragm relief valve
140 Two-way ball valves (discharge valve)
200 Diaphragm pulsation damper
300 Piping on the suction side (with dirt trap and 2/2 way ball cock) option
350 Verbindungsleitung Saugseite (zw. Pumpe 1 und Pumpe 2) option
400 Piping overflow valve back into the suction pipe
(only in connection with piping on the suction si) option
450 Multifunction device option
500
without pic. Detachable splash guard option
600 Terminal box option
610 Main switch of pump option
650 Socket option
700 Leakage sensor without WHG approval option
710 Leakage sensor with WHG approval option
800 Stand for floor mounting (steel (galvanized) or GFK) option
without pic. Protective cabinet with cabinet heating and/or cabinet lighting option
without pic. Protective roof for drive motor option
PRODUCT DESCRIPTION
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Diaphragm pulsation damper (pos. 200)
The chemical is dosed by means of an oscillating positive dis-placement pump. A pulsation damper can be integrated in the
pressure pipe for smoothing the pulsating flow of the pump.
ATTENTION
Whether a pulsation damper must be installed or not, de-pends on the design of the overall system and must be determined
from case to case!
Decisive factors are, among others, the pump size, the pipe geometry (length and diameter), pipe losses, the geo-detic
height to be negotiated and the opening pressure of injection fittings (which might be present) resulting from the spring
load.
The following possibilities are given for the pump series CVD2:
• Installation of a pulsation damper in each dosing leg and thus an independent operation of the pumps for different applica-
tions.
• Connection of the dosing pumps through the additional option “Connection of the pressure side of pump 1 and pump 2”
and installation of a common pulsation damper.
• Connection of the dosing pumps through the additional option “Connection of the pressure side of pump 1 and pump 2”
and installation of a common pulsation damper in each dosing leg. This enables a 100% standby opera-tion of the dosing
pumps. (Connection of pressure side only possible on left con-nection N1).
Piping on the suction side (pos. 300, pos. 350)
The basic unit can be fitted with a piping on the suction side as option. This piping includes a ball valve as stop valve and a dirt
trap.
The suction sides of each pump at CVD2 are separated from one an-other so that the medium can be taken from different barrels.
The suction sides of the pumps can be connected when a fur-ther option “Connecting conduit on the suction side of pump 1 and
pump 2” (pos. 350) is added.
Piping overflow relief valve (pos. 400)
When the overflow valves open, the medium can be led back into the suction pipes via return pipes.
ATTENTION
This option may only be used when a multifunction device (pos. 450) is mounted, or when the backflow of the medium into
the corresponding tank is not hindered by a foot valve or simi-lar in the suction pipe.
Inobservance of this note may result in damage to the sys-tem, the pump or adjacent system parts.
PRODUCT DESCRIPTION
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Multifunction device (pos. 450)
480
320
460 470
Pt. Function Position
480 320 460 470
1Filling open closed open closed
2Volumetric measurement open open closed closed
3Priming aid / Siphon vessel closed open open closed
Volumetric measurement of dosing pump:
• Setting the ball cocks acc. pt 1 of the table
• Fill the device either according to the principle of interconnected tanks or with the help of a hand vacuum pump.
• Setting the ball cocks acc. pt 2 of the table.
• Volumetric measurement of pump, Read flow rate on scale, Setting the pump, repeat the process.
ATTENTION
Don’t overfill device (max. up to nominal contents) as oth-erwise medium can leak in the venting ball cock (resp. in-take
hose)!
Filling of multifunction device:
• Setting the ball cocks acc. pt 1of the table
• Fill multifunction device
• Setting the ball cocks acc. pt 3 of the table
Operate as Priming aid / Siphon vessel:
• Setting the ball cocks acc. pt 1 of the table
• Fill multifunction device
• Setting the ball cocks acc. pt 3 of the table
• Operate the dosing pump
PRODUCT DESCRIPTION
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Splash guard (pos. 500)
A splash guard is available as option to protect the operating personnel against chemical splashes which may occur due to
damage on the system. The splash guard consists of three parts. The side parts are fixed, the front part is removable.
Terminal box (pos. 600), socket (pos. 650 / 660) and main switch (pos. 610)
The system can be fitted with a terminal box or a socket or a main switch as transition points for power connections or a signal
exchange.
Leakage sensor (pos. 700 / 710)
A magnetic float switch (pos. 700) or a leakage sensor (pos. 710) detects leakages at the system. This optional device can be
integrated in the collecting basin.
ATTENTION
The magnetic float switch (pos. 700) is not approved according to WHG!
Stand for floor mounting (pos. 800)
The system is installed on a mounting plate for wall mounting as standard. A stand for floor mounting is available as option if
there are no possibilities for wall mounting at the installation site.
PRODUCT DESCRIPTION
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Accessories
1
2
3
4
5
1MID Mounting for flow meter 4Inspection glas
2Manometer 5Manometer
3Rinsing ball cock
TECHNICAL DATA
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UNIT DATA
Flow capacity l/h
Permissible counter pressure bar (max)
Permissible suction head mWC (max)
Number of pumps Quantity
CVD1(s)-60.1 CVD1(s)-550.1 CVD1(s)-1500.1
0 - 60 0 - 550 0 - 1500
10 8 5
333
111
CVD2-60.1 CVD2-550.1 CVD2-1500.1
2x 0 - 60 2x 0 - 550 2x 0 - 1500
10 8 5
333
222
UNIT DATA
Flow capacity l/h
Permissible counter pressure bar (max)
Permissible suction head mWC (max)
Number of pumps Quantity
R/C204.1 - 2,4e ... R/C204.1 - 35e █ █
iSTEP S 20 ... iSTEP S 50 █ █
RF409.2 - 2,4e ... RF409.2 - 50e █ █
C409.2 - 25e ... C409.2 - 50e... █ █
RF410.2 - 11 ML ... RF410.2 - 45 ML █ █
C410.2 - 11 ML ... C410.2 - 45 ML █ █
RF409.2 - 75e ... RF409.2 - 350e █ █
C409.2 - 75e ... C409.2 - 350e █ █
RF410.2 - 280e ... RF410.2 - 570e █ █
C410.2 - 280e ... C410.2 - 570e █ █
RF410.2 - 110 ML ... RF410.2 - 500 ML █ █
C410.2 - 110 ML ... C410.2 - 500 ML █ █
RF410.2 - 570e ... RF410.2 - 1450e █ █
C410.2 - 570e ... C410.2 - 1450e █ █
RF410.2 - 1200 ML █ █
C410.2 - 1200 ML █ █
PUMP ASSIGNMENT
CVD1(s) - 60.1
CVD1(s) - 550.1
CVD1(s) - 1500.1
CVD2 - 60.1
CVD2 - 550.1
CDV2 - 1500.1
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